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US 2002/0034989 A1Published application
Golf ball
AssigneeSpalding Sports Worldwide, Inc.
InventorsMichael J. Sullivan, John Nealon, Mark Binette, Dennis Nesbitt
Life of this patent
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AssigneeSpalding Sports Worldwide, Inc.
InventorsMichael J. Sullivan, John Nealon, Mark Binette, Dennis Nesbitt
Estimating the term…
The present invention is directed to improved multi-layer golf ball compositions and the resulting regulation balls produced using these compositions. In this regard, a smaller and lighter core is produced and metal particles, or other heavy weight filler materials, are included in the cover compositions. This results in a molded golf ball exhibiting enhanced interior perimeter weighting. Preferably, the particles are included in a relatively thick inner cover layer (or mantle) of a solid, three-piece multi-layered golf ball. The size and weight of the core is reduced in order to produce an overall golf ball which meets, or is less than, the 1.62 ounce maximum weight limitation specified by the United States Golf Association. In one aspect, a golf ball having a particular moment of inertia is provided, ranging from 0.390 to 0.480 oz. in.2 The balls utilize components having particular dimensions and weights such as a core having a diameter of 1.28 to 1.57 inches and a weight of 18 to 38.7 grams; an inner cover layer having a thickness of 0.01 to 0.20 inches and a weight with the core of 32.2 to 44.5 grams; and an outer cover layer having a thickness of 0.01 to 0.11 inches and a weight with the core and inner cover layer of 45.0 to 45.93 grams. It has been found that the combination of the present invention produces a golf ball with an increased moment of inertia and/or a greater radius of gyration and thus generates lower spin. This results in a golf ball exhibiting enhanced distance without substantially effecting the feel and durability characteristics of the ball.
A golf ball comprising a core, an inner cover layer and an outer cover layer, wherein the moment of inertia of the ball is about 0.445 oz. in.2 (81.39 g/cm2).
A multi-layer golf ball, having a moment of inertia of from about 0.390 oz. in.2 (71.33 g/cm2) to about 0.480 oz. in.2 (87.79 g/cm2), comprising a core, an inner cover layer and an outer cover layer having a dimpled surface, wherein said core has a diameter from about 1.28 to 1.57 inches (3.25 cm to 3.98 cm) and a weight of 18 to 38.7 grams (0.634 to 1.36 ounces), said inner cover layer has a thickness of from 0.01 to 0.200 inches (0.0254 cm to 0.508 cm) and a weight, with core, of 32.2 to 44.5 grams (1.16 to 1.57 ounces) and said outer cover layer has a thickness of from 0.01 to 0.110 inches (0.0254 cm to 0.2794 cm) and a weight, with core and inner cover layer, of 45.0 to 45.93 grams (1.59 to 1.62 ounces).
A multi-layer golf ball, having a moment of inertia of from about 0.390 oz. in2. (71.33 g/cm2) to about 0.480 oz. in2. (87.79 g/cm2), consisting of a core, an inner cover layer and an outer cover layer having a dimpled surface, wherein said core has a diameter from about 1.28 to 1.57 inches (3.25 cm to 3.98 cm) and a weight of 18 to 38.7 grams (0.634 to 1.36 ounces), said inner cover layer has a thickness of from 0.01 to 0.200 inches (0.0254 cm to 0.508 cm) and a weight, with core, of 32.2 to 44.5 grams (1.16 to 1.57 ounces) and said outer cover layer has a thickness of from 0.01 to 0.110 inches (0.0254 cm to 0.2794 cm) and a weight, with core and inner cover layer, of 45.0 to 45.93 grams (1.59 to 1.62 ounces).
A multi-layer golf ball, having a moment of inertia of from about 0.390 oz. in.2 (71.33 g/cm2) to about 0.480 oz. in (87.79 g/cm2), comprising a core, an inner cover layer and an outer cover layer having a dimpled surface, wherein said core has a diameter from about 1.28 to 1.57 inches (3.25 cm to 3.98 cm) and a weight of 18 to 38.7 grams (0.634 to 1.36 ounces), said inner cover layer has a thickness of from 0.01 to 0.200 inches (0.0254 cm to 0.508 cm), a Shore D hardness of 65 or more, and a weight, with core, of 32.2 to 44.5 grams (1.16 to 1.57 ounces) and said outer cover layer has a thickness of from 0.01 to 0.110 inches (0.0254 cm to 0.2794 cm) and a weight, with core and inner cover layer, of 45.0 to 45.93 grams (1.59 to 1.62 ounces).
Dependencies are inferred from the claim text.